JP4938847B2 - Radio access information transmission / reception method using message separation in radio mobile communication system - Google Patents

Description

  The present invention relates to E-UMTS (Evolved Universal Mobile Telecommunications System), and more particularly, to a method for efficiently transmitting and receiving access information between a terminal and a base station using message separation for an RRC CONNECTION REQUEST message.

  FIG. 1 shows an E-UMTS network structure of a mobile communication system applicable to the prior art and the present invention.

  The E-UMTS system is an evolved system from the existing UMTS system, and basic standardization applicable to this is performed in 3GPP. The E-UMTS system is classified as an LTE (Long Term Evolution) system.

  Referring to FIG. 1, an E-UMTS network is divided into an E-UTRAN (Evolved UMTS terrestrial radio access network) and a core network (CN). The E-UTRAN includes a terminal (UE (user equipment)), a base station (eNode B or eNB), and an AG (Access Gateway) (which can also be expressed as “MME / S-GW”). The AG is divided into a part for processing user traffic and a part for processing control traffic. The AG part for handling new user traffic and the AG part for handling control traffic can communicate with each other via a newly defined interface. One eNode B (eNB) includes one or more cells, and an interface for transmitting the user traffic and the control traffic can be used between the eNode Bs.

  The CN includes AG, a node for user registration of the UE, and the like. As the interface, in the UMTS of FIG. 1, an interface for distinguishing the E-UTRAN and the CN can be used. The S1 interface can connect a plurality of nodes between the eNode B and the AG (that is, in a many-to-many manner). The eNodeBs are connected to each other via an X2 interface, and the X2 interface is always present between adjacent eNodeBs in a mesh network structure.

  The layer of the radio interface protocol between the UE and the network is based on the first three layers (L1), the second layer (L2) based on the lower three layers of the open system interconnection (OSI) reference model known in the communication system. And the third layer (L3).

  The first layer (L1) provides an information transmission service using a physical channel, and the radio resource control (RRC) layer located in the third layer plays a role of controlling radio resources between the terminal and the network. For this purpose, the RRC layer exchanges RRC messages between the terminal and the network. The RRC layer may be distributed to be located in a network node such as an eNode B and the AG, or may be located only in the eNode B or the AG.

  FIG. 2 shows the structure of a radio access interface protocol between a terminal and UTRAN based on various 3GPP radio access network standards.

  The radio interface protocol includes a horizontal layer including a physical layer, a data link layer, and a network layer, and a vertical plane including a user plane that transmits data information and a control plane that transmits control signals.

  The protocol layers are arranged in the first layer (L1), the second layer (L2), and the third layer (L3) based on the lower three layers of a known open system interconnection (OSI) reference model in a communication system. It is divided. Hereinafter, each layer of the radio protocol control plane shown in FIG. 2 and the radio protocol user plane shown in FIG. 3 will be described.

  The physical layer, which is the first layer, provides an information transmission service to an upper layer using a physical channel. The physical layer is connected to a medium access control (MAC) layer that is positioned above the transport channel. Data is transmitted between the MAC layer and the physical layer over a transport channel. Data is transmitted via physical channels between different physical layers, that is, between the physical layer on the transmission side and the physical layer on the reception side.

  The MAC layer of the second layer provides a service to a radio link control (RLC) layer, which is a higher layer in a logical channel. The RLC layer of the second layer supports reliable data transmission. The RLC function can be realized as a functional block inside the MAC layer, and in this case, the RLC layer may not exist. The Packet Data Convergence Protocol (PDCP) layer of the second layer efficiently transmits data transmitted using IP packets such as IPv4 and IPv6 via a wireless interface having a relatively small bandwidth. Therefore, a header compression function for reducing unnecessary control information is performed.

  The radio resource control (RRC) layer located at the bottom of the third layer is defined only in the control plane, and is related to the setting, reconfiguration, and release of a radio bearer (RB). Controls port channels and physical channels. Here, the RB is a service provided by the second layer (L2) for data transmission between the terminal and the UTRAN.

  The downlink transport channel for transmitting data from the network to the mobile terminal includes a broadcast channel (BCH) for transmitting system information and a downlink shared channel for transmitting user traffic and control messages (BCH). Shared Channel (SCH). Downlink multicast, broadcast service traffic or control messages can be transmitted on the downlink SCH or on a separate downlink multicast channel (Multicast Channel: MCH).

  As an uplink transport channel for transmitting data from a mobile terminal to a network, a random access channel (RACH) for transmitting an initial control message and an uplink for transmitting user traffic or a control message There is a shared channel (SCH).

  Hereinafter, RRC connection and signaling connection will be described in detail. In order to communicate, the terminal (UE) needs to have an RRC connection with the UTRAN and a signaling connection with the core network (CN). The terminal transmits and / or receives terminal control information with the UTRAN or the CN through the RRC connection and the signaling connection.

  The WCDMA RACH (Random Access Channel) will be described in detail below.

  The RACH is used to transmit short data on the uplink, and a part of an RRC message (that is, an RRC CONNECTION REQUEST message, a cell update message, a URA update message) is also transmitted on the RACH. The RACH is mapped to a common control channel (CCCH), a dedicated control channel (DCCH), and a dedicated traffic channel (DTCH), and then mapped to a physical random access channel (PRACH).

  The PRACH that is an uplink physical channel is divided into a preamble part and a message part. The preamble portion is used to appropriately control the transmission power for message transmission (ie, power ramping function), and is used to prevent a collision between a plurality of terminals. The message part is used for transmission of a MAC PDU transmitted from the MAC to the physical channel.

  When the MAC of the terminal instructs the physical layer of the terminal to transmit PRACH, the physical layer of the terminal first selects one access slot and one (preamble) signature, and transmits the preamble to the uplink using the PRACH. To do. Here, the preamble is transmitted within a specific length (eg, 1.33 ms) of the access slot section. One of 16 different signatures is selected and transmitted within the first predetermined length of the access slot.

  When the preamble is transmitted from the terminal, the base station transmits a response signal using an AICH (Acquisition Indicator Channel) that is a downlink physical channel. In response to the preamble, the AICH transmits a selected signature within the first predetermined length of the access slot. Here, the base station transmits an ACK response or a NACK response to the terminal according to the signature transmitted from the AICH.

  Upon receiving the ACK response, the terminal transmits a message portion having a length of 10 ms or 20 ms using an OVSF code corresponding to the transmitted signature. When receiving the NACK response, the MAC of the terminal instructs the physical layer of the terminal again to transmit PRACH after a predetermined time. Also, if the AICH is not received for the transmitted preamble, the terminal transmits a new preamble with higher power than that used for the previous preamble after a predetermined access slot.

  Hereinafter, an initial access / connection process from the terminal (UE) to the network in the LTE system will be described in detail.

  As shown in FIG. 4, the UE selects a random access signature (Random Acess Signature) and a random access opportunity (Random Acess Occasion) that can be used according to system information transmitted from the RRC signal of the eNB, and randomly accesses the eNB. (Also referred to as message 1) is transmitted (S1). After receiving the random access preamble (message 1) normally, the eNB transmits a random access response (also referred to as message 2) to the UE (S2). The random access response (message 2) is uplink time synchronization (or TA (Time Advance)) information with the eNB, C-RNTI (used to identify the corresponding UE in the corresponding cell), or RRC CONNECTION REQUEST. It includes uplink radio resource allocation information (ie, initial approval) for message transmission. After receiving the random access response (message 2), the UE transmits an RRC CONNECTION REQUEST message (also referred to as message 3) according to the allocated radio resource information included in the random access response (S3). After receiving the RRC CONNECTION REQUEST message (message 3) from the UE, the eNB transmits an RRC collision resolution message (also referred to as message 4) to the UE.

  In the prior art, the UE generally acquires uplink radio resource information necessary for transmitting the message 3 by the message 2. That is, the eNB determines the amount of radio resources (ie, time, frequency, transmission format, etc.) necessary for the UE to transmit the message 3 based on the message 1 transmitted by the UE and is allocated. Radio resources are transmitted with message 2.

  However, in this respect, since there is a limit on the amount of information included in the message 1 from the UE, there is a problem in that the eNB cannot estimate an accurate radio resource allocation amount for transmitting the message 3. is there. Therefore, if the eNB is unable to provide UE with appropriate radio resource allocation (used to send message 3), data transmission due to the lack of radio resources for message 3, as shown in FIG. Time delay or waste of radio resources may occur.

  One exemplary feature of the present invention is to provide a method for transmitting and receiving radio access information using message separation in a wireless mobile communication system.

  To realize at least all or part of the above-described features, the present invention provides a data communication method in a wireless communication system, the method comprising: transmitting a random access preamble; and as a response to the random access preamble Receiving a random access response including information regarding at least one allocated radio resource utilized for the next scheduled data transmission; and at least one for the transmission of the next scheduled data Determining the required radio resources; and considering the at least one allocated radio resource and at least one characteristic of the determined at least one required radio resource to determine the next scheduled data. Generating.

  The next scheduled data is an RRC CONNECTION REQUEST message or an initial uplink acknowledgment, and the next scheduled data is an Attach Request, Routing Area Update Request, Detach Request Request, and Service Request StraNest ) Contains a message.

  When the terminal generates the next scheduled data, the determined at least one required radio resource can be compared with the at least one assigned radio resource. The next scheduled data is generated separately in two or more data groups when the at least one allocated radio resource is smaller than the determined at least one requested radio resource, and the base station Sent separately.

  The radio resource control RRC signal from the base station to the terminal specifies which information of the next scheduled data needs to be included in which data group, and the RRC signal may be system information or a paging message. Good. Each separated data group also includes an identity to indicate the type of information included in the next scheduled data of each separated data group.

  In addition, when the terminal generates the next scheduled data, the determined at least one required radio resource can be compared with a predetermined threshold. After making this comparison, if the determined at least one required radio resource is less than the threshold, the determined at least one required radio resource generates the next scheduled data. To be compared with the at least one assigned radio resource for.

  The present invention also provides a data communication method in a wireless communication system, wherein the method receives a random access preamble, and the terminal receives next scheduled data as a response to the received random access preamble. Transmitting a random access response including information regarding at least one assigned radio resource for transmission, and receiving the next scheduled data from the terminal, wherein the terminal comprises: Determining at least one required radio resource for transmitting the next scheduled data, wherein the next scheduled data is determined by the terminal as at least one allocated radio resource before transmission; At least one required radio resource It is generated by considering the at least one feature.

  In addition, the present invention provides a mobile terminal for data communication in a wireless communication system, wherein the mobile terminal is transmitted / received via a transceiver that transmits / receives the data, or via an external resource. In cooperation with the memory for storing the data, the transceiver and the memory, transmitting a random access preamble, at least one used for transmitting next scheduled data as a response to the random access preamble Receiving a random access response including information on one assigned radio resource, determining at least one required radio resource to transmit the next scheduled data, and the at least one assigned The radio resources and the determined low Both a processor to perform the step of generating one of the required at least one said is the next scheduled taking into account the data of the radio resources.

For example, the present invention provides the following.
(Item 1)
In a data communication method in a wireless communication system,
Transmitting a random access preamble;
Receiving as a response to the random access preamble a random access response including information on at least one allocated radio resource utilized for a next scheduled data transmission;
Determining at least one required radio resource for transmission of the next scheduled data;
Generating the next scheduled data taking into account at least one of the at least one allocated radio resource and the determined at least one required radio resource;
A data communication method comprising:
(Item 2)
The data communication method according to item 1, wherein the next scheduled data is an RRC CONNECTION REQUEST message.
(Item 3)
The data communication method according to item 1, wherein the next scheduled data includes a NAS (NonAccess Stratum) message.
(Item 4)
The NAS message includes an Attach Request and a Routing Area.
Item 4. The data communication method according to Item 3, wherein the data communication method is at least one of Update Request, Detach Request, and Service Request.
(Item 5)
Generating the next scheduled data comprises:
The data communication method of item 1, comprising comparing the determined at least one required radio resource with the at least one assigned radio resource.
(Item 6)
If the at least one assigned radio resource is greater than or equal to the determined at least one requested radio resource, the next scheduled using the at least one assigned radio resource; 6. The data communication method according to item 5, further comprising a step of transmitting data.
(Item 7)
Generating the next scheduled data comprises:
Further comprising separating the next scheduled data into two or more data groups if the at least one allocated radio resource is less than the determined at least one requested radio resource. Item 6. The data communication method according to Item 5.
(Item 8)
8. The data communication method according to item 7, further comprising the step of transmitting each data group individually.
(Item 9)
The next scheduled data of the first data group is related to information for connection between the terminal and the base station, and the next scheduled data of the second data group is the base station and mobility management 8. The data communication method according to item 7, wherein the data communication method relates to information for connection between entities (MME).
(Item 10)
8. The data communication method according to item 7, wherein a radio resource control (RRC) signal from the base station to the terminal specifies which information of the next scheduled data is included in which data group.
(Item 11)
Information regarding which data group includes which information of the next scheduled data is determined by the amount of data transmitted from the terminal and / or the amount of allocated radio resources in the random access response. Item 11. The data communication method according to Item 10.
(Item 12)
12. The data communication method according to item 11, wherein the RRC signal is system information or a call message.
(Item 13)
Item 8. The data communication method according to Item 7, wherein each separated data group includes an identity for indicating a type of information.
(Item 14)
The item of claim 1, wherein the at least one assigned radio resource or the determined at least one required radio resource is defined by one or more bits or a parameter indicating a radio resource. Data communication method.
(Item 15)
The method of claim 1, wherein generating the next scheduled data includes checking the determined at least one required radio resource with a threshold.
(Item 16)
The step of generating the next scheduled data includes determining the determined at least one radio resource to the at least one assigned radio if the determined at least one requested radio resource is less than the threshold. 16. The data communication method according to item 15, further comprising a step of comparing with a resource.
(Item 17)
In a data communication method in a wireless communication system,
Receiving a random access preamble; and
As a response to the received random access preamble, transmitting a random access response including information on at least one assigned radio resource for the terminal to transmit next scheduled data;
Receiving the next scheduled data from the terminal;
Wherein the terminal determines at least one required radio resource for transmitting the next scheduled data;
The next scheduled data is generated by the terminal considering at least one of the allocated radio resources and at least one of the determined required radio resources before transmission. A featured data communication method.
(Item 18)
The data communication method according to item 17, wherein the next scheduled data is an RRC CONNECTION REQUEST message.
(Item 19)
The method of claim 18, further comprising determining whether the next scheduled data includes a NAS message by confirming an identity included in the next scheduled data. Data communication method.
(Item 20)
20. The data communication method according to item 19, wherein the identity is used to indicate which group of information is included in the next scheduled data.
(Item 21)
Item 17 wherein the determined at least one requested radio resource is compared with the at least one assigned radio resource for the terminal to generate the next scheduled data. The data communication method described in 1.
(Item 22)
The next scheduled data is separated into two or more data groups when the at least one allocated radio resource is less than the determined at least one requested radio resource, each data group comprising: Item 22. The data communication method according to Item 21, wherein the data communication method is received individually.
(Item 23)
The next scheduled data of the first data group is related to information for connection between the terminal and the base station, and the next scheduled data of the second data group is the mobility with the base station. Item 23. The data communication method according to Item 22, wherein the method relates to information for connection between management entities (MMEs).
(Item 24)
24. The data communication of item 22, further comprising transmitting a radio resource control (RRC) signal to specify which data group includes which information of the next scheduled data. Method.
(Item 25)
25. A data communication method according to item 24, wherein the RRC signal is system information or a call message.
(Item 26)
23. A data communication method according to item 22, wherein each separated data group includes an identity for indicating a type of information.
(Item 27)
If the determined at least one required radio resource is compared with a threshold and the determined at least one required radio resource is less than the threshold, the determined at least one required radio resource is 18. The data communication method according to item 17, wherein the next scheduled data is compared with the at least one assigned radio resource for the terminal to generate.
(Item 28)
Item 18. The data communication of item 17, wherein the at least one allocated or determined at least one required radio resource is defined by one or more bits or a parameter indicating a radio resource. Method.
(Item 29)
In a mobile terminal for data communication in a wireless communication system,
A transceiver for transmitting and receiving the data;
A memory for storing the data transmitted / received via the transceiver or from an external resource;
In conjunction with the transceiver and the memory,
Transmitting a random access preamble;
Receiving, as a response to the random access preamble, a random access response including information about at least one assigned radio resource utilized to transmit subsequent scheduled data;
Determining at least one required radio resource for transmitting the next scheduled data;
And a processor that performs the step of generating the next scheduled data taking into account at least one of the at least one allocated radio resource and the determined at least one required radio resource. Feature mobile terminal.
The objects, features, aspects and advantages of the present invention will become more apparent from the detailed description of the invention and the accompanying drawings described below.

  The drawings, which are included to facilitate understanding of the invention and constitute a part of this specification, illustrate various embodiments of the invention and together with the description, explain the principles of the invention.

  One aspect of the present invention is based on the knowledge of the present inventors regarding the problems and disadvantages of the prior art as described above, and will be described in detail below. Based on such knowledge, the present invention has been completed.

  Although the present invention is described as being implemented in a mobile communication system such as UMTS developed in accordance with 3GPP specifications, the present invention may be applied to other communication systems that operate in accordance with various standards and specifications. Is also applicable.

  As network technology evolves, it is expected that RNC will not be needed in future networks. This is because a Node B or other type of network entity (eg, a so-called access gateway) with improved capabilities can handle operations performed by existing RNCs. These long term evolution issues approve new terminals (or set up new user links) and support newly developed and improved services for multiple terminals managed by the network. To support the need to develop improved wireless admission control technology used to

  The present invention provides a method for effectively transmitting data (ie, access information) from a terminal (UE) to a base station (eNB). More specifically, the present invention appropriately sets or generates access information (ie, RRC CONNECTION REQUEST message) based on uplink radio resources allocated by the base station, and then transmits the access information to the base station. , Optimize transmission efficiency (ie, minimum time delay, efficient use of radio resources).

  Preferably, the uplink radio resource is used to transmit the message 3, and information on the uplink radio resource is provided from the base station to the terminal by the message 2.

  Preferably, the message 3 is an RRC CONNECTION REQUEST message.

  Preferably, the message 3 includes a part or all of a NAS (NonAccess Stratum) message (ie, Attach Request, Routing Area Update Request, Detach Request, Service Request, etc.).

  Hereinafter, a method for generating or setting an RRC CONNECTION REQUEST message by a terminal according to the present invention will be described in detail.

  The number of bits for the allocated radio resource received by the message 2 (or other parameter indicating the radio resource) is the number of bits of information necessary to generate the RRC CONNECTION REQUEST message (message 3). If larger or identical, the terminal generates an RRC CONNECTION REQUEST message including all necessary information and transmits it to the base station.

  FIG. 6 shows an RRC connection procedure when provision or allocation of radio resources by the eNB is sufficient.

  Referring to FIG. 6, the terminal (UE) may also transmit a random access preamble for RRC connection with the base station (eNB) (S1). The base station may transmit a random access response to the terminal as a response to the transmitted random access preamble (S2). Here, the random access response may include uplink radio resource allocation information for transmitting an RRC CONNECTION REQUEST message by the terminal.

  After receiving the random access response, the terminal may check the uplink radio resource included in the random access response and calculate or determine the number of bits necessary for transmitting the RRC CONNECTION REQUEST message. . That is, after calculating or determining the amount of radio resources allocated from the base station based on the number of bits that need to be transmitted, information necessary for transmitting the RRC CONNECTION REQUEST message includes the allocated radio resources. The terminal may generate the RRC CONNECTION REQUEST message including all necessary information (S3). In this case, the RRC CONNECTION REQUEST message includes not only information necessary for connection between the terminal and the base station, but also information necessary for connection between the base station and the MME (Mobility Management Entity) (that is, S1 connection). It can also be included. In some cases, it is not necessary to calculate the amount of the allocated radio resource. That is, when the number of bits required for transmitting the RRC CONNECTION REQUEST message is equal to or less than a predetermined threshold, the message can be immediately transmitted using the radio resource allocated by the message 2 without going through a calculation step. Here, the threshold can be provided from the base station to the terminal through system information or a call message.

  After generating the RRC CONNECTION REQUEST message, the terminal may transmit the RRC CONNECTION REQUEST message to the base station (S4). At the same time, in order to quickly resolve a collision between different terminals having the same preamble (signature), the base station may transmit an RRC CONTENTION RESOLUTION message to the terminal (S5). The RRC CONTENTION RESOLUTION message may include the unique identity of the terminal.

  After receiving the RRC CONNECTION REQUEST message from the terminal, the base station may transmit a CONNECTION REQUEST message to the MME for connection with the MME (S6). The MME may transmit a CONNECTION SETUP message to the base station as a response to the transmitted CONNECTION REQUEST message (S7). The base station may transmit an RRC CONNECTION SETUP message to the terminal after receiving the CONNECTIO SETUP message from the MME (S8). After receiving the RRC CONNECTION SETUP message, the terminal may transmit an RRC CONNECTION COMPLETE message to the base station to notify the completion of the RRC connection (S9).

  The number of bits for the allocated radio resource transmitted by the message 2 (or other parameter indicating the radio resource) is more than the number of bits of information necessary to generate the RRC CONNECTION REQUEST message (message 3). If the number is small or small, the terminal can generate and transmit an RRC CONNECTION REQUEST message including only a part of the necessary information to the base station. Here, the remaining part of the necessary information can be generated later and transmitted individually to the base station.

  FIG. 7 shows an RRC connection procedure when provision or allocation of radio resources by the eNB is not sufficient.

  Referring to FIG. 7, the terminal (UE) may transmit a random access preamble for RRC connection with the base station (eNB) (S1). The base station may transmit a random access response to the terminal as a response to the transmitted random access preamble (S2). Here, the random access response may include uplink radio resource allocation information for transmitting an RRC CONNECTION REQUEST message by the terminal.

  After receiving the random access response, the terminal can check the uplink radio resource included in the random access response and calculate or determine the number of bits necessary for transmitting the RRC CONNECTION REQUEST message. That is, after calculating or determining the amount of radio resources allocated from the base station based on the number of bits that need to be transmitted, information necessary for transmitting the RRC CONNECTION REQUEST message depends on the allocated radio resources. If transmission is not possible, the terminal may generate the RRC CONNECTION REQUEST message including only a part of necessary information (S3). For example, the RRC CONNECTION REQUEST A message may include only information necessary for connection between the terminal and the base station (ie, information necessary for connection between the base station and the MME (ie, S1 connection) Not included). Therefore, information necessary for the connection between the base station and the MME can be generated or included in the RRC CONNECTION REQUEST B message and transmitted later. In this situation, the base station determines which information needs to be included in the RRC CONNECTION REQUEST A message and / or what information needs to be included in the RRC CONNECTION REQUEST B message according to the RRC signal. The terminal can also be notified. Here, the RRC signal may be system information or a paging message.

  Hereinafter, different examples will be described in order to explain in more detail. Assuming that information A, B, and C need to be included in the RRC CONNECTION REQUEST message and radio resource R (1) is allocated to the terminal, this terminal uses only the information A and RRC CONNECTION REQUEST A is generated and transmitted, and RRC CONNECTION REQUEST B is generated and transmitted using the information B and C. In this case, the RRC CONNECTION REQUEST A may include information necessary for transmission of the RRC CONNECTION REQUEST B. For example, the RRC CONNECTION REQUEST A may include information for generating the RRC CONNECTION REQUEST B, such as the required number of bits, the amount of buffers, or the amount of radio resources.

  After generating the RRC CONNECTION REQUEST A and B messages, the terminal may first transmit the RRC CONNECTION REQUEST A message to the base station (S4). In this case, the terminal may include a predetermined identity for determining a type of information included in the RRC CONNECTION REQUEST A. For example, if the information A, B, and C need to be included in the RRC CONNECTION REQUEST message (message 3) and a 1-bit identity is used, the base is set to “0”. The station determines that the information A and B are included in the RRC CONNECTION REQUEST A. On the other hand, when the identity is set to “1”, the base station determines that only the information C is included in the RRC CONNECTION REQUEST A.

  At the same time, in order to quickly resolve a collision between different terminals having the same preamble (signature), the base station may transmit an RRC CONTENTION RESOLUTION message to the terminal (S5). The RRC CONTENTION RESOLUTION message may include the unique identity of the terminal. In addition, the RRC CONTENTION RESOLUTION message may include radio resource information (that is, time, frequency, and radio resource transmission format) for transmitting the RRC CONNECTION REQUEST B message. In addition, the base station may transmit information allocated for transmitting the RRC CONNECTION REQUEST B message through an L1 / L2 control channel.

  The terminal may transmit the RRC CONNECTION REQUEST B message to the terminal using the RRC CONTENTION RESOLUTION message, system information, or radio resource allocation information acquired from the L1 / L2 control channel (S6). Here, the order of steps S5 and S6 can be changed. That is, the terminal may transmit the RRC CONNECTION REQUEST B message before receiving the RRC CONTENTION RESOLUTION message.

  After receiving the RRC CONNECTION REQUEST A, B message from the terminal, the base station may transmit a CONNECTION REQUEST message to the MME for connection with the MME (S7). The MME may transmit a CONNECTION SETUP message to the base station as a response to the transmitted CONNECTION REQUEST message (S8). The base station may transmit the RRC CONNECTION SETUP message to the terminal after receiving the CONNECTION SETUP message from the MME (S9). After receiving the RRC CONNECTION SETUP message by the terminal, the terminal may transmit an RRC CONNECTION COMPLETE message to the base station to notify the completion of the RRC connection (S10).

  The present invention provides a data communication method in a wireless communication system, wherein the method is used for transmitting a random access preamble and as a response to the random access preamble for at least a next scheduled data transmission. Receiving a random access response including information about one allocated radio resource; determining at least one required radio resource for transmission of the next scheduled data; and the at least one Generating the next scheduled data taking into account allocated radio resources and at least one of the determined at least one requested radio resource; and the at least one allocated radio resource includes the At least judged Transmitting the next scheduled data utilizing the at least one assigned radio resource if greater than or equal to one requested radio resource, wherein the next schedule The generated data is an RRC CONNECTION REQUEST message or an initial uplink acknowledgment. The next scheduled data includes a NAS (NonAccess Stratum) message. The NAS message is at least one of Attach Request, Routing Area Update Request, Detach Request, and Service Request. Generating the next scheduled data includes comparing the determined at least one required radio resource with the at least one assigned radio resource. The step of generating the next scheduled data may include two or more of the next scheduled data if the at least one allocated radio resource is less than the determined at least one requested radio resource. Separating the data groups and transmitting each data group individually. The next scheduled data of the first data group is related to information for connection between the terminal and the base station, and the next scheduled data of the second data group is the base station and mobility management Related to information for connection between entities (MME). A radio resource control (RRC) signal from the base station to the terminal specifies which data group contains which information of the next scheduled data. Information regarding which data group includes which information of the next scheduled data is determined by the amount of data transmitted from the terminal and / or the amount of allocated radio resources in the random access response. The The RRC signal is system information or a call message. Each separated data group includes an identity to indicate the type of information. The at least one assigned radio resource or the determined at least one required radio resource is defined by one or more bits or a parameter indicating a radio resource. Generating the next scheduled data includes checking the determined at least one required radio resource with a threshold. The step of generating the next scheduled data includes determining the determined at least one radio resource to the at least one assigned radio if the determined at least one requested radio resource is less than the threshold. The method further includes a step of comparing with the resource.

  Further, the present invention provides a data communication method in a wireless communication system, wherein the method receives a random access preamble, and the terminal receives next scheduled data as a response to the received random access preamble. Transmitting a random access response including information regarding at least one assigned radio resource for transmission, and receiving the next scheduled data from the terminal, wherein the terminal comprises: Determining at least one required radio resource for transmitting the next scheduled data, wherein the next scheduled data is determined by the terminal as at least one allocated radio resource before transmission; At least one required radio resource It is generated by considering the at least one of. The next scheduled data is an RRC CONNECTION REQUEST message. The method further includes determining whether the next scheduled data includes a NAS message by confirming an identity included in the next scheduled data. The identity is used to indicate which group of information is included in the next scheduled data. The determined at least one required radio resource is compared with the at least one assigned radio resource for the terminal to generate the next scheduled data. The next scheduled data is separated into two or more data groups when the at least one allocated radio resource is less than the determined at least one requested radio resource, each data group comprising: Received individually. The next scheduled data of the first data group is related to information for connection between the terminal and the base station, and the next scheduled data of the second data group is the mobility with the base station. Related to information for connection between management entities (MMEs). The method further includes transmitting a radio resource control (RRC) signal to specify which information of the next scheduled data is included in which data group. The RRC signal is system information or a call message. Each separated data group includes an identity to indicate the type of information. If the determined at least one required radio resource is compared with a threshold and the determined at least one required radio resource is less than the threshold, the determined at least one required radio resource is , The next scheduled data is compared with the at least one assigned radio resource for the terminal to generate. The at least one allocated or determined at least one required radio resource is defined by one or more bits or a parameter indicating a radio resource.

  Furthermore, the present invention provides a mobile terminal for data communication in a wireless communication system, wherein the mobile terminal is transmitted / received via a transceiver that transmits / receives the data, or via an external resource. In cooperation with the memory for storing the data, the transceiver and the memory, transmitting a random access preamble, at least one used for transmitting next scheduled data as a response to the random access preamble Receiving a random access response including information on one assigned radio resource, determining at least one required radio resource to transmit the next scheduled data, and the at least one assigned Radio resources and the determined low Kutomo one by considering at least one of the required radio resources including a processor for performing the step of generating the next scheduled data.

  Although the present invention has been described in the context of mobile communications, it is also applicable to other wireless communication systems that use mobile devices such as PDAs and laptop computers with wireless communication characteristics (ie, interfaces). Furthermore, the specific terms used to describe the present invention do not limit the scope of the present invention to a specific wireless communication system. The present invention is further applied to other wireless communication systems using other wireless interfaces and / or other physical layers such as TDMA, CDMA, FDMA, WCDMA, OFDM, EV-DO, Wi-Max, Wi-Bro. Applicable.

  This embodiment can be implemented as a manufacturing method, apparatus, or product utilizing standard programming and / or engineering techniques for producing software, firmware, hardware, or a combination thereof. Here, the term “product” refers to hardware logic (for example, an integrated circuit chip, FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), etc.), computer readable medium (for example, hard disk drive, floppy ( (Registered trademark) magnetic recording media such as disks and tapes), optical recording devices (CD-ROM, optical disks, etc.), or volatile and non-volatile memory devices (eg, EEPROM, ROM, PROM, RAM, DRAM, SRAM, firmware, Code and logic executed in program logic).

  Code in the computer readable medium is connected and executed by a processor. The code for executing this embodiment can be connected through a transmission medium or from a file server on a network. In that case, the product on which the code is executed includes a transmission medium such as a network transmission line, a wireless transmission medium, a signal propagating in the air, a radio wave, and an infrared signal. Of course, a person having ordinary knowledge in the technical field can make various modifications of such forms without departing from the gist of the present invention, and the product is a known information bearing medium (information bearing medium). medium)) may also be included.

  The present invention can be implemented in various forms as long as they do not depart from the spirit and important characteristics of the present invention, and the above-described embodiments are not limited to the above-described detailed description, but are attached to the appended claims. It should be construed broadly within the spirit and scope of the invention as defined by the scope, and all modifications and variations that come within the scope of the claims of the invention, and equivalents of the claims, are claimed. include.

It is a figure which shows the network structure of E-UMTS of the mobile communication system with which the mobile terminal of the past and this invention is applied. It is a figure which shows the structure of the control plane of the radio | wireless interface protocol between the terminal and UTRAN based on 3GPP radio | wireless access network specification. FIG. 2 is a diagram illustrating a user plane structure of the radio interface protocol between the terminal and the UTRAN based on the 3GPP radio access network standard. It is a figure which shows the initial stage connection process between UE and eNB. It is a figure which shows the problem of the transmission of the message 3 by the shortage of the allocated radio | wireless resource. It is a figure which shows the RRC connection procedure in case the provision or allocation of the radio | wireless resource by said eNB is enough. It is a figure which shows the RRC connection procedure in case the provision or allocation of the radio | wireless resource by the said eNB is not enough.

Claims (11)

A data communication method in a wireless communication system, comprising:
The method
The terminal sends a random access preamble;
Receiving, as a response to the random access preamble, a random access response including information on at least one allocated radio resource used to transmit next scheduled data by the terminal, The next scheduled data is an RRC CONNECTION REQUEST message, and the next scheduled data includes a NAS (NonAccess Stratum) message;
Determining, by the terminal, at least one required radio resource for transmission of the next scheduled data;
Comparing the determined at least one required radio resource with a threshold by the terminal;
Only if at least one of the requested radio resource the was judged greater than the threshold, by the terminal, at least one required radio resource the was determined compared to the at least one assigned radio resource And
Generating the next scheduled data taking into account both the at least one allocated radio resource and the determined at least one required radio resource by the terminal, the next Scheduled data is generated separately into two or more data groups when the at least one assigned radio resource is lower than the determined at least one requested radio resource;
Transmitting the next scheduled data to the network by the terminal, the next scheduled data including a specific identity indicating a type of data included in the next scheduled data; The specific identity is utilized only when the next scheduled data is generated and transmitted separately.   The method according to claim 1, wherein the NAS message is at least one of an Attach Request, a Routing Area Update Request, a Detach Request, and a Service Request. Generating the next scheduled data comprises:
The method of claim 1, comprising comparing the determined at least one requested radio resource with the at least one assigned radio resource.   If the at least one assigned radio resource is greater than or equal to the determined at least one requested radio resource, the next scheduled using the at least one assigned radio resource. 4. The method of claim 3, further comprising transmitting the received data. Generating the next scheduled data comprises:
Further comprising separating the next scheduled data into two or more data groups if the at least one assigned radio resource is less than the determined at least one requested radio resource. Item 4. The method according to Item 3.   6. The method of claim 5, further comprising transmitting each data group individually.   The next scheduled data of the first data group relates to information for a connection between the terminal and the base station, and the next scheduled data of the second data group moves with the base station 6. The method of claim 5, relating to information for a connection with a sex management entity (MME).   6. The method of claim 5, wherein a radio resource control (RRC) signal from a base station to a terminal specifies which information of the next scheduled data is included in which data group.   6. The method of claim 5, wherein each isolated data group includes an identity for indicating the type of information.   The method of claim 1, wherein generating the next scheduled data comprises checking the determined at least one required radio resource with a threshold. A mobile terminal for data communication in a wireless communication system,
The mobile terminal
A transceiver adapted to transmit and receive the data;
A memory adapted to store the data transmitted / received via the transceiver or transmitted / received from an external source;
Processor and
The processor is
In conjunction with the transceiver and the memory,
Transmitting a random access preamble;
In response to the random access preamble, receiving a random access response including information on at least one assigned radio resource utilized to transmit next scheduled data, the next scheduled The data is an RRC CONNECTION REQUEST message, and the next scheduled data includes a NAS (NonAccess Stratum) message;
Determining at least one required radio resource for transmitting the next scheduled data;
Comparing the determined at least one required radio resource with a threshold by the terminal;
By the terminal, only if at least one of the requested radio resource the was judged greater than the threshold value, comparing the at least one required radio resource the was judged the at least one assigned radio resource And
Generating the next scheduled data taking into account both the at least one allocated radio resource and the determined at least one required radio resource, wherein the next scheduled data Is generated separately in two or more data groups when the at least one assigned radio resource is lower than the determined at least one requested radio resource;
Transmitting the next scheduled data to the network by the terminal, wherein the next scheduled data includes a specific identity indicating a type of data included in the next scheduled data. The particular identity is utilized only when the next scheduled data is generated and transmitted separately, and is adapted to perform the steps.

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